Nycomed Imaging As

Nycomed Salutar, Inc.

Torsten Alm En

Jo Klaveness

Arne Berg

Harald Dugstad

Pangl Rongved

Klaus D Krautwurst

Sook-Hui Kim

The invention relates to the use as contrast enhancing agents in medical imaging, especially X-ray imaging, of multinuclear complexes, i.e. complexes, such as those of W202 (U20) 2, in which the complexed entity comprises at least two contrast enhancing atoms.

Multinuclear complexes for X-ray imaging

Heterocyclic chelating agents and salts thereof of formula I: ##STR1## wherein X represents a bond, O or S, or a group CHR.sup.1 or NR.sup.3 ; each R.sup.1 represents H, a group OR.sup.3 or NR.sup.3 R.sup.3, or an alkyl or alkoxyalkyl group optionally substituted by a hydroxyl group or by a group NR.sup.3 R.sup.3 or CON.sup.3 R.sup.3 ;

Diazine chelating agents for diagnostic imaging

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Malm o, Sweden

Torsten Alm En